High-compbession ihternal-cqmbtjstion eijgdte



Patented 0st'. 7,1919.

E. A. HELD, 1K1 HIGH COMPHESSIUN INTERNAL COMBU'STION ENGINE. n AIAPLICATION FILED FEB. 2. 1918- l,'18,006.

mf MN E. A. FIELD, JR. HIGI1l COMPRESSION INTERNAL COMBUSTION ENGINE.

APPLICATION FILED FEB. 2. 1918- Paltenfed Oct. 7,1919. `3 SHEETS-SHEET 2 E. A. FIELD, In. HIGH COMPRESSION INTERNAL COMBUS'IIUN ENGINE.

APPLICATION FILED FB.2.191a,

1,818,006. mmm om. 7,1919.

3 SHEETSMSHEET 3.

nnwanii A. Hernan., or GRAND narins, MICHIGAN, Assieivon or onaantr- EDWARD A. FIELD, SIR.,

or can PARK, immers.

HIGH-COMPRESSIQN INTERNAL-COMBUSTION ENGINE.

asia;

Specication'of LettersIPatent.

application inea February a, 191s. seriai No. 215,041.

To all whom 'it may concern:

Be it known that I, EDWARD A. FIELD, J r.,

a citizen of the United States, residing vat Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements in High-Compressionv of which the Internal-Combustion Engines, following is a specication.

The present invention relates to high compression internal combustion motors and its object is, generally, to provide. an improved motor of that general character; and more particularly,

fuel to the cylinders of the engine in which the amount of charge and the time of delivery may be nicely regulated; and to provide an improved eccentric construction for regulating the time of delivery of the charge with respect to the compression stroke of the piston. 'Y

'These andv any other obJects appearing hereinafter are attained by, and the invention finds preferable embodiment in, the

structure hereinafter described and illustrated by the accompanying drawings, in which Figure 1 is a transverse vertical sectional view of an engine constructed according to this invention;

Fig. 2 is a continuation of Fig. 1, showing the improvechmeans for regulating the time of delivery ofthe fuel charge;

Fig. 3 is a side view of the mechanism shown in Fig. 2'; v

lFig. 4 is a vertical sectional detail taken on the line 4-4 of Fig. 1. A Engines of the same general type to Which the present invention relates are frequently provided with means for delivery of the fuel charge under pressure against the pressure irrespective` of the degree of compression within the cylinders, while others are provided with a receptacle for receiving the charge inthe head of the cylinder, the charge being forced out ofsaid receptacle when the air in the cylinder is compressed,

and when the compression reaches the ignition point the combustion takes place at once. The present invention relates tothe latter specific type of engine but means are providedifor opening port-s in the fuel cnarge receptacle when the compression is higher than that normally required for effecting ignition. "When the outlet ports of the fuel receptacle are opened the compressed air to provide means for deliver-- Vforces the charge out of said receptacle into the engine cylinder. The charge is highly heated or evaporated during the latter action and of course when it comes in contact with the compressed air valmost complete combustion of the fuel takes place. i

, In the embodiment of the invention chosenfor illustration by the drawings and shown. The operating means for these valves is omitted from the drawing since it may be the customary connection to a cam shaft. A piston 3cr' usual construction lis shown in the cylinder 1.

The head of the cylinder is provided withl a vertical bcre 4 in which isv mounted a 'cylindrical member 5 containingr a fuel inlet channel `6. A passage 7 connects the channel 6 with a vertical passage 8 in'which is slidable a reciprocating plunger 9 for forcing fluid vfrom the passage 8 through a passage 10 leading to the interior of the fuel charge receptacle 11. Communication between passages 7 and 8 is closed by a check say valve 12 during the down-stroke of plunger 9,'and the outlet of assage 10 to the receptacle 11 is controlled) per end of the stein 14 ofvalve 13 is surrounded by a coil spring 15 which is normally held/compressed by the cup-shaped end 16 of a lever 17 which is pivoted at 18 .and operated by a connection to the cam shaft""not shown. This lever is rocked to relieve tension of spring 15 at the'time of the down-stroke of plunger 9 when it is desired to deliver fuel to the receptacle 11. The outlet ports 19 of the receptacle 11 leading to the interior of. cylinder 1 are controlled by a sleeve valve 20. This valve is in the form of a cylinder surrounding receptacle 11 and is cut away at its upper end to provide a' pair of upstanding arms 21. These arms are pivotally connected to the inner end Aof the forked lever 22 in turn pivoted to a bracket 23 secured to the member 5. The outer end of lever 22 is connected to a pitman 24 Which is reciprocated by means of a rotary eccentric 25, Fig. 2. With this construction, rotation of the eccentric by valve 1-3. The upcauses the rocking of lever 22 and consequently the reciprocation of the cylindrical' valve member 20. The ports 26 of said valve member are thus alternately caused to come into and out of registration with the outlet ports 19 of the fuel charge receptacle 11.

Inasmuch as the valve 20 moves transversely to the pressure thereon in opening and closing, it will be seen that this valve is .balanced as to gas pressures.

The particular construction to Which this invention relates with respect to regulating the time of action of valve 20 is shovvn in Figs. 2 and 3. The crank-shaft 27 carries a pinion 28 meshing with the gear 29 fast to a shaft 30. The eccentric 25 is loose on the shaft and angularly adjustable thereon With respect to the gear 29 but is normally held in positive relation With the gear by means of an arm 31 integral With the eccentric. The outer end of this arm is pivotally connected to a lever 32 which is pivotally mounted on an eccentric 33 journaled on a stub shaft 3l extending from the side of gear 29. f Integral with the eccentric 33 is an arm 35 connected by a link 36 with a bell crank lever37 pivotally mounted on ears 38 of gear 29. A universal joint 39 is provided between the link 3G and bell crank lever 37.

The opposite end of the bell eranklever is forked and has pins l() extending into a grooved coll-ar 41 slidabl mounted on shaft 30. This collar is shiftalile along the shaft, in order. to rock the bell 'crank leve-r, by means of a manually operated lever 42. With this construction, adjustment of lever 42 causes the rocking of the bell crank lever and consequently through the link 36 and arm 35 adjustment of eccentric 33 on the pin 3l. The partial rotation 0f eccentric 33 results in bodily motion being imparted to the lever 32, the motion from this` lever being transmitted through the arm 3l to the eccentric 25. Thus the eccentric 25 is adjusted angularly with respect to the gear 29 with Which it rotates and accordingly its action is advanced or retarded as desired with respect to the rotation of cani shaft 27. In this manner the time of opening of valve 20 may be nicely adjusted.

In order that the heat of compression in.V the cylinder may be easily radiated to the fuel charge within the receptacle l1, the lattei' to increase its surface, is preferably ribbed as shown in Fig. 1.

The rocker arm 17, which serves totension the operating spring l5 for valve 13, is provided with a shoulder 43 for bearing against and actuating the stein 44 of inlet valve 2. l't likewise. carries a bent arm 45 bearing against a spring -li secured to the operatingaiin i7 'for the plunger 9. The pivotal'point l'oi' the ai'ni -lT is at its righthand end. Vlg. l. and is adjustable b v govimanes ernor, not shown, controlled eccentric 48, in

order to automatically regulate the stroke of plunger 9 for the purpose of varying the amount of fuel delivered to receptacle '11.

In the operation of the device, during the suction stroke the inlet valve 2 is lopened land air only is drawn into the combustion chamber. rllie same mechanism, rocker arin 17, Which opens the inlet valve also, through the bent arm 45 and lever 47, forces the plunger 9 downwardly, squeezing out a certain amount of fuel oil past the small puppet valve 13 into the chamber 11. Ihen when the main piston compresses the air into the cylinder and reaches the upper end of the stroke, the sleeve or piston valve 2O is shifted to cause its ports to register With the ports 19 in the receptacle 11. The heat of compression causes the oil in this receptacle to vaporize and When communication is opened between the receptacle and the coinbustion space the oil ignites forcing the Working piston down. It Will be understood that previous to the stroke of plunger 9 the head of the oil causes it to raise the check valve 12 and enter the space belovv7 the plunger 9.

In ease motor should stall While operator is absent, the cylinder (four-cylinder motor) Whose inlet valve is open will have the tension relieved on the small Spring which seats 'the fuel puppet valve. At the same time the fuel plunger is force-d down and it presses against the small spring above the ball check valve, thus ell'ectively sealing the main cylinder from a possible flooding of oil.

The invention being intended to be pointed out by the claims severally, is not to be limited to or by details of construction shown or described.

I claim:

1. An internal combustion motor of the class described, comprising an engine cylinder and a. fuel supply device consisting of a` receptacle having an outlet port communieating with the interior of said cylinder, a valve balanced as to gas pressures and controlling said port, said receptacle having an inlet port, a valve for controlling said inlet port and means for moving the` valves alternately .for opening and closing said ports in succession.

2. An internal combustion motor of the class described, comprising an engine cylinder and a fuel supply device consisting of a. receptacle having an outlet port communieating with the interior of said cylinder, a valve controlling said port, said receptacle having an inlet port, a valve for controlling said inlet port and means for moving the valves alternately for opening and closing said ports in succession, said means including a rotatable member having mounted thereon a valve operating eccentric, and means for angulai'ly adjusting said eccentric ftlwith respect to saidrotatable member for the purpose of altering the relative time of action of Vthe valves o erated thereby.

3. An internal com ustion motor of the class described, comprising an engine'cylin-,-

der and a fuel supply devi-ce, an outlet port for' said fuelsupply device communicating f with the ,interior of said cylinder, a vvalve controlling said port, a rotatable member and an eccentric mounted on said member 10 for operatmg Said valve, and means for anj gularly adjusting said eccentric with respect to sald rotatable member for the purpose of changing the' time of action of said valve.

" In testimony whereof I have hereunto set 15 my hand at Grand Rapids, Michigan, .this 29th day of January, 1918.

EDWARD A. FIELD, JR. 

